Year	constant 2010 US$
1978	176914884291.557
1979	183834402349.889
1980	192889102843.517
1981	195941505942.876
1982	196116444242.204
1983	204469537031.598
1984	217399987913.526
1985	231419778065.667
1986	241388030343.994
1987	245984137809.116
1988	243323248247.335
1989	245279121129.387
1990	249647670755.083
1991	256637085159.412
1992	268336114073.775
1993	275608196532.017
1994	290998453632.505
1995	304194659708.53
1996	319622889714.728
1997	336728523699.206
1998	345450260897.139
1999	353124162904.214
2000	362458856026.113
2001	374905703409.5
2002	380998590965.918
2003	385546445493.896
2004	399354516454.923
2005	413469353151.027
2006	419236183985.022
2007	430095601999.84
2008	431429781667.835
2009	428491057094.309
2010	433708589549.152
2011	437519419183.005
2012	448915832130.127
2013	454734739815.178
2014	473382777131.908
2015	486488012185.757
2016	491988094379.711
2017	501797533888.703
2018	509314343511.728